Team / Our people Meet Our Experts FilterIng by Service Civil & Transportation Engineering Construction Management Landscape Architecture Mechanical Engineering Public Works Administration and Permitting Surveying / GIS Solutions Water Resources Professional Support Services Our Principals Brad Brechwald, PE, PLS CEO, President Thomas Zehnder, PE Principal Jorge Aguilar, PE Principal Robert Miller, PE Principal Kari Wagner, PE Principal and Director of Water Resources Bryan Childress, PE Senior Mechanical Engineer Tim Peterson Project Analyst Compliance Inspector Cris Disarufino Senior Civil Designer Bryce Dilger, PLS Senior Land Surveyor II Ralph Schell Senior Civil Designer Anthony Lehman Assistant Resident Engineer Zachary Caipang, EIT Associate Engineer Zach Markow, PE Civil Engineer Daniel Herrera Survey Technician I Conner Kelly, PE Associate Engineer Matt Wilkins, PLA, ASLA, APA Director of Landscape Architecture Valerie Huff, PE Senior Civil Engineer Nick Sine, LSIT Survey Technician Tony Scalise Assistant Resident Engineer Nate Whitcare, PE Senior Designer Bill Callahan Senior Environmental Compliance Specialist Paula Cappiello Senior Accountant Clayton Bradshaw, PE, PLS Director of Surveying Glenn Rider Senior Environmental Compliance Specialist Lonnie Richardson Senior Project Analyst Rachel Hawthorne, PE Director of Civil and Transportation Engineering Steven Tanaka, PE, CSI, CCS Principal Civil Engineer Alvaro Escobedo Associate Engineer Ryan Burmaster Survey Technician Jenni Metzger Project Analyst John Wallace, PE Consulting Engineer Travis Vasquez, PE Associate Engineer Mark Madonna, PE Survey Technician Julie Rae Wilson Controller Olivia Williams Associate Engineer Kathy Redden Executive Assistant Michael Hausman, PE Civil Engineer Matt Valez Office Manager Jenna Mitchell Human Resources Manager Erik Rutherford, PE Senior Mechanical Engineer Wen Bin Sullivan, PE Civil Engineer Alexandra Cass Associate Engineer Nancie L. Adams, PE Senior Civil Engineer Suzanne Baird. PLA 6114 Landscape Architect Ann Sever, PLA 4038 Senior Landscape Architect Elvira Morla-Camacho, PE, QSD/P Senior Civil Engineer Luz Garcia, PLS Professional Land Surveyor Zac Powell, EIT Associate Engineer Skye Thomas, PLS Senior Land Surveyor George Marchenko, PLS Senior Land Surveyor Samar Saliba Accounting Zachary Teske, PE Director of Construction Management Craig A. Campbell, PE, PLS Consulting Engineer Greg Hulburd, PE, QSD/P Civil Engineer Bill Lindahl Senior Mechanical Engineer Sarah Huffman, PE Civil Engineer Gabriela Mendoza Marketing Coordinator Marco Castaneda, PLS Professional Land Surveyor Brett Hadley, PE, QSD/P Senior Civil Engineer Ethan Pence, PE Civil Engineer Josh Whipple Senior Mechanical Designer Want to make our communities better? Join Our Team More Of Our Projects